1 /* $NetBSD: boot.c,v 1.7 2002/09/11 02:17:14 mycroft Exp $ */ 2 /* 3 * Copyright (c) 1994 Rolf Grossmann 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Rolf Grossmann. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/param.h> 33 #include <sys/reboot.h> 34 35 #include <lib/libsa/stand.h> 36 #include <lib/libsa/loadfile.h> 37 #include <lib/libkern/libkern.h> 38 39 #include <machine/cpu.h> /* for NEXT_RAMBASE */ 40 41 #include <next68k/next68k/nextrom.h> 42 43 #define KERN_LOADADDR NEXT_RAMBASE 44 45 extern int errno; 46 47 extern char *mg; 48 #define MON(type, off) (*(type *)((u_int) (mg) + off)) 49 50 int devparse __P((const char *fname, int *dev, 51 char *count, char *lun, char *part, char **file)); 52 53 /* the PROM overwrites MG_boot_arg :-( */ 54 /* #define PROCESS_ARGS */ 55 56 /* 57 * Boot device is derived from PROM provided information. 58 */ 59 60 extern char bootprog_rev[]; 61 extern char bootprog_name[]; 62 extern int build; 63 #define KNAMEN 100 64 char kernel[KNAMEN]; 65 int entry_point; /* return value filled in by machdep_start */ 66 int turbo; 67 68 extern void rtc_init(void); 69 70 extern int try_bootp; 71 72 volatile int qq; 73 74 int 75 main(char *boot_arg) 76 { 77 int fd; 78 u_long marks[MARK_MAX]; 79 int dev; 80 char count, lun, part; 81 char machine; 82 char *file; 83 #ifdef PROCESS_ARGS 84 char *kernel_args = MON(char *, MG_boot_dev); 85 #endif 86 87 machine = MON(char, MG_machine_type); 88 if (machine == NeXT_TURBO_MONO || machine == NeXT_TURBO_COLOR) 89 turbo = 1; 90 else 91 turbo = 0; 92 93 memset(marks, 0, sizeof(marks)); 94 printf(">> %s BOOT [%s #%d]\n", bootprog_name, bootprog_rev, build); 95 printf(">> type %d, %sturbo\n", machine, turbo ? "" : "non-"); 96 rtc_init(); 97 98 try_bootp = 1; 99 100 #if 0 101 { 102 int i; 103 int *p = (int *)mg; 104 for (i = 0; i <= 896; ) { 105 printf ("%d: %x %x %x %x %x %x %x %x\n", i, p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]); 106 p = &p[8]; 107 i += 8*4; 108 } 109 } 110 printf("Press return to continue.\n"); 111 getchar(); 112 #endif 113 114 strcpy(kernel, boot_arg); 115 entry_point = NULL; 116 117 for (;;) { 118 marks[MARK_START] = (u_long)KERN_LOADADDR; 119 fd = loadfile(kernel, marks, LOAD_KERNEL); 120 if (fd != -1) { 121 break; 122 } 123 124 printf("load of %s: %s\n", kernel, strerror(errno)); 125 printf("boot: "); 126 gets(kernel); 127 if (kernel[0] == '\0') 128 return NULL; 129 130 #ifdef PROCESS_ARGS 131 kernel_args = strchr(kernel, ')'); 132 if (kernel_args == NULL) 133 kernel_args = kernel; 134 kernel_args = strchr(kernel_args, ' '); 135 if (kernel_args) 136 *kernel_args++ = '\0'; 137 #endif 138 } 139 140 dev = 0; 141 count = lun = part = 0; 142 if (devparse(kernel, &dev, &count, &lun, &part, &file) == 0) { 143 char *p = (char *)marks[MARK_END]; 144 strcpy (p, devsw[dev].dv_name); 145 MON(char *, MG_boot_dev) = p; 146 p += strlen (p) + 1; 147 sprintf (p, "(%d,%d,%d)", count, lun, part); 148 MON(char *, MG_boot_info) = p; 149 p += strlen (p) + 1; 150 sprintf (p, "%s", file); 151 MON(char *, MG_boot_file) = p; 152 #ifdef PROCESS_ARGS 153 p += strlen (p) + 1; 154 if (kernel_args) 155 strcpy (p, kernel_args); 156 else 157 *p = 0; 158 MON(char *, MG_boot_arg) = p; 159 #endif 160 } 161 162 *((u_long *)KERN_LOADADDR) = marks[MARK_END] - KERN_LOADADDR; 163 printf("entry 0x%lx esym 0x%lx\n", 164 marks[MARK_ENTRY], marks[MARK_END] - KERN_LOADADDR); 165 return marks[MARK_ENTRY]; 166 } 167